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This review discusses the distinct roles and surprising developmental flexibility of multiple somatic stem cell types in tissue maintenance and repair, reporting no new results but highlighting emerging questions about their regulation and origins.

This review discusses recent findings on the plasticity and regulation of epithelial stem cells and reports no new experimental results.

This article reviews the classification of hair shaft abnormalities, outlining their diagnostic features, but does not present new research findings.

This review discusses the isolation, structure, and bioactivity of lignans and neolignans from 2016 to mid-2018, reporting no new clinical results but highlighting their potential protective properties against diseases such as cancer and neurodegeneration.

This review discusses the role of 5α-reductase enzymes in androgen action and related disorders, noting that their specific inhibitory drugs show promise for conditions like benign prostatic hypertrophy; it reports no new clinical results.

This study found that in captive mouflon rams, reproductive and physical maturation, marked by changes in hormone levels and physical attributes, progresses gradually across their life span, with sexual maturity tied closely to physical maturity.

This research article focuses on nonsteroidal inhibitors of human type I steroid 5-alpha-reductase but reports no new results.

This review discusses WHO group 2 anovulation, highlighting polycystic ovary syndrome as a common cause of infertility and noting current treatment options without presenting new clinical results.

This study describes the enzymatic processes through which DHEA is converted to active sex steroids in human skin, highlighting an androgenic effect on sebaceous glands and estrogenic effects in the vagina.

This study found that follistatin and activin interactions are important for hair follicle development and cycling in mice, suggesting that they may regulate processes involving BMP-2 and its antagonist.

Many COVID-19 survivors experience long-term symptoms like fatigue and sleep issues, needing ongoing medical support.

This review explores how androgens and growth hormone influence the development of terminal hairs and sebaceous glands, attributing variability in hirsutism and acne to differing genetic sensitivities to androgens, but reports no new experimental data.

This review discusses the JAK-STAT pathway and the use of FDA-approved JAK inhibitors for autoimmune and inflammatory diseases but reports no new research findings.

This article reviews the characteristics and classification of SAHA syndrome and its relationship with other conditions, without presenting new clinical findings.

Acne is caused by genetics, diet, hormones, and bacteria, with treatments not yet curative.

This paper discusses the hypothesis that anti-acne agents may work by reducing FGFR2 signaling, and emphasizes FGFR2's potential role in acne pathogenesis, but it reports no new experimental findings.

This study found that permanent chemotherapy-induced alopecia was relatively common three years after treatment among breast cancer patients receiving adjuvant chemotherapy, particularly those on taxane-based regimens.

In this study, acne severity in females was strongly associated with inflammatory lesion count and moderately associated with androgens, especially DELTA 4 and DHEAS promoting acne and SHBG reducing it.

This study found that free testosterone levels were a more sensitive indicator of hyperandrogenism in women with acne than total testosterone levels.

This review discusses the relationship between aging, chronic inflammation, and immunosuppression, suggesting that these interconnected processes may contribute to tumorigenesis and premature aging, but reports no new experimental results.

This article proposes two new categories of cicatricial alopecia—“unstable” and “stable”—and suggests surgical excision as preferred over hair transplantation, especially for unstable cases.

This review examines existing research and clinical trials on the use of dupilumab for various skin, respiratory, and gastrointestinal disorders, but it reports no new clinical findings.

This review discusses pharmacologic treatment options for muscle-related pain conditions and notes that there is strong evidence for the efficacy of tricyclic antidepressants and muscle relaxants in specific myofascial pain syndromes, but not universally.

In this study, the authors concluded that COVID-19 may not cause direct long-term harm to testicular function, but temporary indirect effects could occur, suggesting a possible delay in pursuing parenthood post-recovery.

This review discusses the pharmacological properties and analytical methods for determining fluconazole but reports no new experimental findings.

This study found that testosterone and 5α-dihydrotestosterone affect human sebocytes differently depending on the skin region, with spironolactone inhibiting their proliferation and counteracting androgen effects in facial sebocytes.

This study found that women experiencing diffuse hair loss had significantly lower levels of plasma sex-hormone binding globulin compared to controls, while their testosterone levels remained normal.

This review explores how colloidal drug delivery systems can enhance the stability, absorption, and bioavailability of phytochemicals, potentially rediscovering ancient compounds' therapeutic benefits and overcoming limitations like poor solubility and bioavailability.

This review summarizes various effects of bergamot components on multiple health conditions in humans and animals but reports limitations in their use for stress and anxiety relief in aromatherapy.

This study found that 4-MA is a potent inhibitor of testosterone 5α-reductase in human tissues, promising potential for treating androgen-dependent skin conditions like male pattern baldness.